Gold tailings re-selection case analysis

15311826613

Welcome to consult Xinhai - customized mineral processing plan

Xinhai can provide you with mineral processing tests, mineral processing process and mineral processing equipment selection, mineral processing plant scheme design and construction drawing design; provide mining mineral processing equipment; provide mineral processing plant construction and equipment installation as well as mine management and operation services.

Consultation 153-1182-6613

15311826613

Click to add WeChat

Get product price

WeChat ID has been copied, add friends, and get manufacturer quotations!

Gold is widely loved by people as a hard currency. At present, the price of gold continues to soar, and it is even more closely watched. However, with the change of time, easy-to-select gold is becoming less and less. Most of the hard-to-select gold ores and ancient gold tailings are the main investment targets of developers today. So how to redevelop gold tailings? Let's learn about the gold tailings re-selection process and commonly used gold tailings re-selection equipment!

Ore properties of a gold tailings

According to experimental analysis, the gold tailings contain quartz, feldspar, a small amount of gold, mica and some iron- and sulfur-containing minerals. The mass fraction of weakly magnetic and non-magnetic minerals is more than 70%; sulfur mainly exists in the form of pyrite; the gold content is 0.32g/t, which has a good investment value, and iron and sulfur are the main harmful components of ceramic raw materials. Therefore, before reselection, iron removal and desulfurization treatment are required.

Customized gold tailings reselection process flow

Most of the iron minerals in the gold tailings are in the coarse and fine particles, and the iron content in the intermediate particles (-0.074~+0.009 mm) is low and the distribution rate is low. The distribution rate of gold in coarse and ultra-fine particles is high, and the distribution rate in the +0.074 mm particle size is 48.77%, but the separation of iron and gold in fine particles is very difficult, so the fine-grained materials can be transported to the tailings dam after concentration treatment. The distribution rate of gold in the coarse-grained materials is high, and gold can be recovered by gravity separation. The iron and sulfur content in the medium-grained materials is low, and the iron and sulfur content can be removed by magnetic separation-reverse flotation combined process to recover feldspar.

Analysis of a gold tailings reselection process

Gold tailings reselection reselection process: Reselection mainly selects coarse-grained minerals to enrich gold in the shaker concentrate and obtain relatively satisfactory indicators. The process is that the tailings slurry is fed into the spiral chute for reselection and classification, and the bottom flow is discharged from the chute and sent to the shaking table for reselection. The upper flow is carried away by the water flow to become tailings. The tailings are dehydrated and dry-piled using the tailings dry discharge process.

Gold tailings re-selection weak magnetic-strong magnetic-reverse flotation process: The coarse-grained gold ore after re-selection is subjected to weak magnetic selection to remove iron filings and strong magnetic minerals; Strong magnetic selection to remove weakly magnetic iron-containing minerals (hematite, limonite, etc.), and in the reverse flotation, Na₂CO₃ is used as an adjusting agent, hydroxamic acid and tall oil are used as mixed collectors, and No. 2 oil is used as a frother to remove weakly magnetic iron ore in the minerals; CaO is used as an adjustment agent in the third flotation. agent, CuSO₄ as activator, butyl xanthate as collector, and No. 2 oil as foaming agent to remove sulfides from minerals.

Introduction to a gold tailings re-selection equipment

Gold tailings re-selection equipment: Spiral chute and shaking table, of which the spiral chute occupies a small area, has no power consumption, has a simple process, and is easy to achieve coarse, medium and fine particle classification; the shaking table is suitable for fine particle re-selection.

Gold tailings magnetic separation equipment: Weak magnetic separation uses a drum magnetic separator with a magnetic field strength of 0.2T. Strong magnetic separation uses a steel plate medium with a magnetic field strength of 1.8T.

Gold tailings flotation equipment: The flotation machines used in the gold tailings reselection process are XCF flotation machine and KYF flotation machine.

Gold tailings dehydration equipment: The gold tailings dehydration and dry discharge process uses a cyclone + concentrator + chamber filter press, and the final dehydration rate is about 17%.

The above is an introduction to the gold tailings re-selection process and the gold tailings re-selection equipment. In the actual ore dressing plant, whether it is gold mine or gold tailings, the selection of its ore dressing process must be based on the properties of the gold ore to obtain a more ideal return on investment.